US5359128AExpiredUtilityPatentIndex 91

Malic acid derivatives and compositions for the treatment of psoriasis

Assignee: BLANK IZHAKPriority: Jan 18, 1991Filed: Feb 11, 1993Granted: Oct 25, 1994

Est. expiryJan 18, 2011(expired)· nominal 20-yr term from priority

Inventors:BLANK IZHAK

A61K 31/225A61K 38/16A61K 38/04C07C 235/06C07C 59/245A61K 31/19C07C 235/12A61K 31/195A61K 31/22

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Abstract

The invention comprises compositions and methods for the treatment of psoriasis. The compositions comprise compounds of the formula: ##STR1##

Claims

exact text as granted — not AI-modified

I claim: 
     
       1. A compound of formula ##STR13## or a pharmaceutically acceptable salt thereof, wherein: R 1  and R 2  are the same and each is a residue of an amino acid of formula ##STR14## R 3  is H; R 4  is ethyl; and R 9  is ##STR15##

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